JPH09172479A - Transmitter-receiver and speaker using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide both functions of a bone-conduction microphone and a speaker within one casing and to clearly hear the voice of a communicating party because noise is hardly mixed and howling is hardly generated. SOLUTION: The bone-conduction microphone 2 and the speaker 3 are housed in one casing 4. The bone-conduction microphone 2 is housed in a tip part being the end part of the external auditory meatus inserting side of the casing 4, and a blowing agent 6 for absorbing vibration is arranged around the bone- conduction microphone 2. A cavity part 7 is provided between the blowing agent 6 inside the casing 4, and the speaker 3, and a through hole 8 passing through the inside/outside of the casing 4 is provided at the tip part of the cavity part 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmitter / receiver to be worn on one ear and a communication device such as a telephone set using the transmitter / receiver.

[0002]

2. Description of the Related Art A bone conduction microphone is a microphone that picks up a bone conduction sound signal from an ear canal wall and converts it into an electric signal. Since a bone conduction microphone can be used for conversation even by a person with a vocal cord disorder, it is used as an assisting device for generation.

A conventional handset is shown in FIG. (A) is a handset attached to the outer ear (A). The speaker (c) and the bone conduction microphone (a) are housed in the same casing (d) and (e). A resin (f) such as silicon is filled between the speaker (c) and the bone conduction microphone (a) to fix the bone conduction microphone (a) and to prevent air vibration generated from the speaker (c). We are trying to prevent it from reaching the bone conduction microphone (a) directly.

In the vicinity of the speaker (C) of the casing (D), there is provided a through hole (K) for guiding the sound from the speaker (C) through the casing (D) and the ear canal to the depth of the ear canal. There is.

[0005]

However, the vibration caused by the speaker (c) is transmitted through the resin (f) to the bone conduction microphone.
After reaching (a), the bone conduction microphone (a) captures the vibration, which causes noise to be mixed in the transmitted sound, echo, and howling.

Further, since the through hole (g) is located near or outside the ear canal and the gap between the casing (d) and the ear canal is narrow,
Most of the sound coming out of the casing (D) through the through hole (K) leaks to the outside of the ear canal and is difficult to be transmitted to the inner part of the ear canal.

Moreover, most of the sound from the speaker (c) is transmitted to the resin (f) side, and the amount of sound itself emitted from the through hole (ki) is small. As a result, the user of the handset (a) hears a small, muffled and inaudible voice.

In order to solve such a drawback, it has been proposed that the bone conduction microphone and the speaker are housed in separate casings, one of which is attached to the ear canal of the right ear and the other of which is attached to the ear canal of the left ear. . However, in this case, both ears are blocked by the speaker and the bone conduction microphone, and it is not possible to hear external sounds other than the speaker, and the speaker and bone conduction microphone must be set in both ears. Since it does not happen, there is a problem that it is not well-formed and inconvenient to handle.

Therefore, a handset having both the functions of a bone conduction microphone and a speaker in one casing, which is less likely to cause noise and howling in the dial tone, and such a handset There is a demand for a telephone equipped with.

[0010]

A handset (1) according to claim 1 of the present invention is used by being attached to an ear canal, wherein a casing having a bone conduction microphone (2) and a speaker (3) is one.
The bone conduction microphone (2) is housed in (4) and (5). The bone conduction microphone (2) is housed in the tip of the casing (4) and (5) which is the end on the ear canal insertion side. ) Is provided with a foam material (6) for absorbing vibration, and a cavity (7) is provided between the foam material (6) and the speaker (3) in the casings (4) and (5). ) Is provided, and the casing (4) is provided on the tip side of the cavity (7).
A through hole (8) penetrating the inside and the outside is provided.

A handset (1) according to a second aspect of the present invention is the same as the above handset, wherein the casing (4a), (4b) is provided with a stepped portion (10) whose tip side is narrowed, and the through hole (8 ) And (11) are provided on the stepped portion (10).

The handset (1) according to claim 3 is used by being attached to the ear canal, and the bone conduction microphone (2) and the speaker (3) are housed in one casing (4c), (5). The bone conduction microphone (2) is housed in the distal end of the casing (4c), (5) which is the end on the ear canal insertion side.
A foam material (6) for absorbing vibration is arranged around (2), and the foam material (6) in the casings (4c) and (5) and the speaker.
A cavity (7) is provided between (3) and the cavity (7).
The first through hole (12a) is provided near the tip of
A second through hole (12b) is provided in the cavity near the speaker, and a groove (13) is provided between the first through hole and the second through hole on the outer surface of the casing (4c). It is characterized by being.

The handset (1) according to claim 4 is the handset according to any one of the above-mentioned handset units, wherein a cavity is provided in the casing (4), (4a), (4b), (4c).
A sound insulation member (9) is provided between (7) and the foam material (6).

As a result, the bone conduction microphone (2) is hardly affected by the sound emitted from the speaker (3), and it is possible to prevent noise from mixing in the transmitted sound and howling. Further, the sound from the speaker goes out of the casing through the cavity in the casing and is guided to the inner part of the ear canal, so that the user can clearly hear the talk of the other party.

Further, the communication devices (B), (C), (D), (E) of the present invention.
Since it is equipped with the handset (1) as described above, clear conversation is possible. Since the communication device main body does not require a receiving mechanism having a limited mounting position of a microphone and a speaker as in the conventional case, it can be significantly downsized. If a wireless type is used between the handset (1) and the main body of the communication device, it becomes easier to use.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to preferred embodiments. [Embodiment 1] FIG. 1 is a sectional view showing a configuration of a handset of Embodiment 1. The casing of the handset (1) is a speaker
It consists of a base side casing (5) holding (3) and an insertion side casing (4) inserted into the ear canal.

A bone conduction microphone (2) is attached near the tip of the insertion side casing (4) via a foam material (6). Therefore, the foam material (6) is placed around the bone conduction microphone (2).
Is located.

Since the foam material (6) is arranged only at the tip of the insertion side casing (4), the base side of the insertion side casing (4) is a cavity (7). In this example, a partition (9) made of low-resilience rubber as a sound insulating member was provided between the foam material (6) and the cavity (7).

A through hole (8) is provided near the tip of the insertion side casing (4) and in contact with the cavity (7) so as to communicate the outside with the cavity. This through hole (8) may be provided at only one place, or may be provided at a plurality of places.

When the user speaks, the bone conduction microphone (2) picks up a bone conduction sound signal from the wall of the ear canal and transmits it as an electric signal to a device (telephone etc.) to which the handset (1) is attached.

The sound from the speaker (3) is emitted into the insertion-side casing (4) and travels through the cavity (7) to the front end of the insertion-side casing (4) as vibration of air. However, since the foam material (6) is arranged at the tip end, the vibration is absorbed, and the vibration is such that the bone conduction microphone (2) cannot be picked up. Therefore, the bone conduction microphone (2)
The sound from (3) is hardly affected. This sound insulation effect becomes more remarkable if a sound insulation member (9) is provided between the hollow portion (7) and the foam material (6).

The sound in the cavity (7) is transmitted to the space between the insertion side casing (4) and the ear canal through the through hole (8). Unlike the conventional handset, the through hole (8) is provided at a position that goes into the back of the ear canal, so the sound emitted from the hole (8) rarely leaks to the outside of the ear canal. Be led to. Therefore, the user can clearly hear the sound from the speaker (3).

[Embodiment 2] FIG. 2 is a sectional view showing the structure of a handset according to a second embodiment. This embodiment has the same basic configuration as that of the first embodiment, except that a step portion (10) is provided near the through hole (8) of the insertion side casing (4a). This widens the gap between the through hole (8) and the ear canal, and makes it easier to hear the sound emitted from the through hole.

[Third Embodiment] FIG. 3 is a cross-sectional view showing the structure of a handset according to a third embodiment. This embodiment has the same basic configuration as that of the second embodiment, and a step portion (10) is provided near the tip of the insertion side casing (4b). Through hole in this embodiment
A plurality of slits (11) are provided as (8). The sound emitted from the slit (11) to the outside of the insertion side casing (4b) is guided to the depth of the ear canal.

[Embodiment 4] FIG. 4 is a sectional view showing the structure of a handset of a fourth embodiment. This embodiment has a basic configuration similar to that of the first embodiment, and is similar to the first embodiment in that the through hole (12a) is provided near the tip of the insertion-side casing (4c). However, in this embodiment, the insertion side casing (4
A through hole (12b) is also provided near the base of c). A groove (13) is provided between these two through holes (12a), (12b).

The sound in the insertion side casing (4c) is guided to the inner part of the ear canal through the through hole (12a) near the tip as in the first embodiment, and the groove (13) through the through hole (12b) near the base. Through the vicinity of the through hole (12a) near the tip end to the inner part of the ear canal.

In each of the above embodiments of the handset, the foam material (6) is arranged all around the bone conduction microphone (2), but as shown in FIG. Partial space
(6a) may be provided.

[Embodiment 5] This embodiment is a telephone equipped with the above-mentioned handset, and the outline of the configuration is shown in FIG. (B) is a small general telephone connected to the handset (1) described in the first embodiment. (14) is a switch for switching ON / OFF. In the case of this embodiment, listen to the handset (1).
When attached to (A), it is convenient because both hands can be used freely because it is not necessary to hold the handset to talk with one hand as in the past. In addition, even if the surroundings are noisy, it is possible to have a clear conversation. Furthermore, since a large handset unlike the conventional one is not required, the telephone itself can be made extremely small.

[Embodiment 6] This embodiment is a telephone equipped with the above-mentioned handset, and its configuration is shown in FIG. (C) is a small mobile phone connected to the handset (1) described in the first embodiment. (C1) is a wristband, (C2)
Is a battery and (C3) is a pocket holder.

In the case of the present embodiment, since it is possible to talk while holding the mobile phone (C) on the arm, waist, etc. using the wristband (C1) and the pocket holder (C3), it is possible to talk easily even while walking. it can. Further, since vocalization by the vocal cords is not required, it is possible to talk in a small whispered voice, and even if it is used in a train or in a restaurant, it is less likely to cause annoyance to surrounding guests.

Further, in the conventional mobile phone, it was difficult to miniaturize the mobile phone (C) because it was necessary to install the speaker and the microphone at positions close to the ear and the mouth, respectively. Since it is not necessary to install a microphone and a speaker in the main body of (C), it is possible to make an ultra-compact mobile phone never seen before.

[Embodiment 7] This embodiment is a telephone equipped with the above-mentioned handset, and the outline of the configuration is shown in FIG. (D) is a small PHS connected to the handset (1) described in the first embodiment. (D1) is a wrist band, (D2) is a battery, and (D3) is a pocket holder. Also in this embodiment, the same effect as that of the mobile phone of the sixth embodiment can be obtained.

[Embodiment 8] This embodiment is a telephone equipped with the above-mentioned handset, and the outline of its construction is shown in FIG. (E) is a small medical earphone / microphone speaker connected to the handset (1) described in the first embodiment. (E1) is a wristband, (E2) is a battery, and (E3) is a pocket holder.

If this embodiment is also used as a communication device,
For example, it can be used for communication of a patient whose vocal cords have been excised by surgery. In addition, by setting the handset (1) to the patient housed in a room isolated from the outside such as the intensive care unit and installing the main body (E) outside the intensive care unit, The conversation between the patient and the visitor (or medical staff) can be made clear and smooth.

In the telephones of Examples 5 to 8, the handset (1) is connected to the telephone body or the like by a cord.
It can also be a cordless telephone using a wireless system.
In this case, it is easier to use because there is no restriction by the code.

[0036]

As described above, according to the present invention, the functions of both the bone conduction microphone and the speaker are provided in one casing, and moreover, noise mixing and howling are less likely to occur.
It is possible to provide a handset capable of clearly hearing the voice of the other party and a microminiature handset using the handset.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a handset according to a first embodiment.

FIG. 2 is a diagram showing a configuration of a handset according to a second embodiment.

FIG. 3 is a diagram showing a configuration of a handset according to a third embodiment.

FIG. 4 is a diagram showing a configuration of a handset according to a fourth embodiment.

FIG. 5 is a diagram showing a configuration of a handset having a foam material provided with a space.

FIG. 6 is a diagram showing a configuration of a telephone device (general telephone) of a fifth embodiment.

FIG. 7 is a diagram showing a configuration of a telephone device (mobile phone) according to a sixth embodiment.

FIG. 8 is a diagram showing a configuration of a telephone device (PHS) according to a seventh embodiment.

FIG. 9 is a diagram showing a configuration of a telephone device (medical earphone / microphone speaker) according to an eighth embodiment.

FIG. 10 is a diagram showing a configuration of a conventional handset.

[Explanation of symbols]

 (1) Handset (2) Bone conduction microphone (3) Speaker (4) Insertion side casing (5) Base side casing (6) Foam (7) Cavity (8) Through hole (9) Sound insulation member (10) Step (11) Slit (12) Through hole (13) Groove

Claims (6)

[Claims] 1. A handset for use in the ear canal, wherein a bone conduction microphone and a speaker are housed in a single casing, and the bone conduction microphone is housed in a distal end portion of the casing, which is an end on the ear canal insertion side. A foam material for absorbing vibration is arranged around the bone conduction microphone, and a cavity is provided between the foam material in the casing and the speaker. A handset characterized in that a through hole is provided in the casing to penetrate the inside and outside of the casing. 2. The handset according to claim 1, wherein the casing is provided with a stepped portion such that the tip end side is thin, and the through hole is provided in the stepped portion. 3. A handset for use in the ear canal, wherein a bone conduction microphone and a speaker are housed in a single casing, and the bone conduction microphone is housed in a distal end portion of the casing, which is an end portion on the ear canal insertion side. A foam material for absorbing vibration is arranged around the bone conduction microphone, and a cavity is provided between the foam material in the casing and the speaker, and the vicinity of the tip of the cavity is provided. Is provided with a first through hole, and a second through hole is provided in the vicinity of the speaker in the cavity, and is provided between the first through hole and the second through hole on the outer surface of the casing. Is a handset characterized by being provided with a groove. 4. A sound insulation member is provided between the cavity in the casing and the foam material.
Alternatively, the handset according to claim 3. 5. A communication device comprising the handset according to claim 1, claim 2, claim 3 or claim 4. 6. The communication device according to claim 5, wherein electric signals are transmitted between the handset and the communication device main body by a wireless system.